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Polymers
Special Issues
Recent Developments in Thermal and Catalytic Recycling of Plastic Waste
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Recent Developments in Thermal and Catalytic Recycling of Plastic Waste

A special issue of Polymers (ISSN 2073-4360). This special issue belongs to the section "Circular and Green Polymer Science".

Deadline for manuscript submissions: 30 August 2024 | Viewed by 1160

Special Issue Editors

Prof. Dr. Stefano Vecchio Ciprioti

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Guest Editor
Department of Basic and Applied Science for Engineering, Sapienza University of Rome, 00185 Roma, RM, Italy
Interests: thermodynamics of vaporization; thermodynamics of phase transitions; thermal stability; decomposition kinetics; ionic liquids
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Dimitris S. Achilias

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Guest Editor
Department of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
Interests: polymerization kinetics; thermal degradation kinetics; modeling of radical and step polymerization reactions; polymer nanocomposites; calorimetry; polymer recycling
Special Issues, Collections and Topics in MDPI journals
Prof. Dr. Saša Papuga

E-Mail Website
Guest Editor
Faculty of Technology, University of Banja Luka, Banja Luka, Bosnia and Herzegovina
Interests: pyrolysis; thermal pyrolysis; fixed bed reactor; process parameteras; plastic waste

Special Issue Information

Dear Colleagues,

Contemporary methods of thermo-chemical recycling plastic waste, such as pyrolysis, lead to the production of a series of secondary valuable products. The use of suitable catalysts is necessary for the synthesis of targeted products, such as hydrocarbons in common liquid fuels, or specific phenols. Furthermore, it is helpful to have a clear picture of the products obtained after the pyrolysis of real plastic waste, rather than model polymers/blends, since the existence of several additives in small quantities often leads to the formation of potentially harmful compounds.

Is a pre-treatment step for plastic waste necessary before thermo-chemical recycling? Do contaminants affect the quality of the final product, i.e., pyrolytic oil? If so, to what extent, and what are the possibilities of its further usage? What are the possibilities of mixing pyrolytic oil and commercial transport fuels? These are just some of the issues that are of particular interest in the further commercialization of plastic waste pyrolysis technologies. 

Prof. Dr. Stefano Vecchio Ciprioti
Prof. Dr. Dimitris S. Achilias
Prof. Dr. Saša Papuga
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Polymers is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • waste electrical and electronic equipment (WEEE)
  • post-consumer plastic waste
  • pyrolysis
  • gasification
  • decoupling
  • biomass
  • biofuel
  • bio-oil

Published Papers (1 paper)

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Research

13 pages, 2865 KiB  
Article
Effect of Feed Mass, Reactor Temperature, and Time on the Yield of Waste Polypropylene Pyrolysis Oil Produced via a Fixed-Bed Reactor
by Saša Papuga, Jelena Savković, Milica Djurdjevic and Stefano Vecchio Ciprioti
Polymers 2024, 16(10), 1302; https://doi.org/10.3390/polym16101302 - 7 May 2024
Viewed by 820
Abstract
This paper presents the results of investigations into the pyrolysis of waste polypropylene in a laboratory fixed-bed batch reactor. The experiments were designed and verified in such a way as to allow the application of the response surface methodology (RSM) in the development [...] Read more.
This paper presents the results of investigations into the pyrolysis of waste polypropylene in a laboratory fixed-bed batch reactor. The experiments were designed and verified in such a way as to allow the application of the response surface methodology (RSM) in the development of an empirical mathematical model that quantifies the impacts mentioned above. The influence of the mass of the raw material (50, 100, and 150 g) together with the reactor temperature (450, 475, and 500 °C) and the reaction time (45, 50 and 75 min) was examined. It has been shown that the mass of the raw material, i.e., the filling volume of the reactor, has a significant influence on the pyrolysis oil yield. This influence exceeds the influence of reactor temperature and reaction time. This was explained by observing the temperature change inside the reactor at three different spots at the bottom, middle, and top of the reactor. The recorded temperature diagrams show that, with greater masses of feedstock, local overheating occurs in the middle part of the reactor, which leads to the overcracking of volatile products and, from there, to an increased formation of non-condensable gases, i.e., a reduced yield of pyrolytic oil. Full article
(This article belongs to the Special Issue Recent Developments in Thermal and Catalytic Recycling of Plastic Waste)
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